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BEGIN:VEVENT
SUMMARY:Gavril Farkas (Humboldt University in Berlin)
DTSTART:20210610T130000Z
DTEND:20210610T140000Z
DTSTAMP:20260404T094912Z
UID:RVAGeometryFestival/1
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/RVAGe
 ometryFestival/1/">The Kodaira dimension of the moduli space of curves: re
 cent progress on a century-old problem</a>\nby Gavril Farkas (Humboldt Uni
 versity in Berlin) as part of Richmond Geometry Festival\n\n\nAbstract\nTh
 e problem of determining the birational nature of the moduli space of curv
 es of genus g has received constant attention in the last century and insp
 ired a lot of development in moduli theory. I will discuss progress achiev
 ed in the last 12 months. In particular\, making essential of tropical met
 hods it has been showed that both moduli spaces of curves of genus 22 and 
 23 are of general type (joint with D. Jensen and S. Payne).\n
LOCATION:https://stable.researchseminars.org/talk/RVAGeometryFestival/1/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Eugene Gorsky (University of California Davis)
DTSTART:20210610T150000Z
DTEND:20210610T160000Z
DTSTAMP:20260404T094912Z
UID:RVAGeometryFestival/2
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/RVAGe
 ometryFestival/2/">Braid varieties</a>\nby Eugene Gorsky (University of Ca
 lifornia Davis) as part of Richmond Geometry Festival\n\n\nAbstract\nIn th
 e talk I will define braid varieties\, a class of affine algebraic varieti
 es associated to positive braids. I will discuss their relation to Richard
 son and positroid varieties\, HOMFLY polynomial and Legendrian link invari
 ants. This is a joint work with Roger Casals\, Mikhail Gorsky and Jose Sim
 ental Rodriguez.\n
LOCATION:https://stable.researchseminars.org/talk/RVAGeometryFestival/2/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Ana-Maria Castravet (Université Paris-Saclay\, UVSQ)
DTSTART:20210610T173000Z
DTEND:20210610T183000Z
DTSTAMP:20260404T094912Z
UID:RVAGeometryFestival/3
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/RVAGe
 ometryFestival/3/">Effective cones of moduli spaces of stable rational cur
 ves</a>\nby Ana-Maria Castravet (Université Paris-Saclay\, UVSQ) as part 
 of Richmond Geometry Festival\n\n\nAbstract\nI will report on joint work w
 ith Antonio Laface\, Jenia Tevelev and Luca Ugaglia. We construct examples
  of projective toric surfaces whose blow-up at a general point has a  non-
 polyhedral effective cone\, both in characteristic 0 and in prime characte
 ristic.  As a consequence\, we prove that the effective cone of the Grothe
 ndieck-Knudsen moduli space of stable\, n-pointed\, rational stable curves
 \, is not polyhedral if  n>=10 in characteristic 0 and in positive charact
 eristic.\n
LOCATION:https://stable.researchseminars.org/talk/RVAGeometryFestival/3/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Robert Lipshitz (University of Oregon)
DTSTART:20210610T193000Z
DTEND:20210610T203000Z
DTSTAMP:20260404T094912Z
UID:RVAGeometryFestival/4
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/RVAGe
 ometryFestival/4/">Khovanov homology\, Khovanov homotopy</a>\nby Robert Li
 pshitz (University of Oregon) as part of Richmond Geometry Festival\n\n\nA
 bstract\nKhovanov homology is a refinement of the Jones polynomial of a kn
 ot. Like the Jones polynomial\, Khovanov homology is constructed by consid
 ering all the resolutions of a knot diagram. It turns out that this constr
 uction can be refined to associate instead a stable homotopy type to a kno
 t\, whose singular homology is Khovanov homology. In this talk\, we will s
 urvey the definition of Khovanov homology\, its structure\, and some of it
 s applications\, and then discuss briefly how the stable homotopy refineme
 nt of it is constructed\, and some computations and (modest) applications 
 of that refinement. This is joint work with Tyler Lawson and Sucharit Sark
 ar.\n
LOCATION:https://stable.researchseminars.org/talk/RVAGeometryFestival/4/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Claudius Zibrowius (University of Regensburg)
DTSTART:20210611T130000Z
DTEND:20210611T140000Z
DTSTAMP:20260404T094912Z
UID:RVAGeometryFestival/5
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/RVAGe
 ometryFestival/5/">Thin links and Conway spheres</a>\nby Claudius Zibrowiu
 s (University of Regensburg) as part of Richmond Geometry Festival\n\n\nAb
 stract\nWhen does Dehn surgery along a knot give an L-space? More generall
 y\, when does splicing two knot complements give an L-space?  Hanselman\, 
 Rasmussen\, and Watson gave very compelling answers to these questions usi
 ng their technology of immersed curves for three-manifolds with torus boun
 dary.  Similar invariants have been developed for Conway tangles. We use t
 hose invariants to study various notions of thinness in both Heegaard Floe
 r and Khovanov homology from the perspective of tangle decompositions alon
 g Conway spheres.  Interestingly\, our results bear strong resemblance to 
 the aforementioned results about L-spaces.  This is joint work with Artem 
 Kotelskiy and Liam Watson.\n
LOCATION:https://stable.researchseminars.org/talk/RVAGeometryFestival/5/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Orsola Tommasi (University of Padova)
DTSTART:20210611T150000Z
DTEND:20210611T160000Z
DTSTAMP:20260404T094912Z
UID:RVAGeometryFestival/6
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/RVAGe
 ometryFestival/6/">Stable cohomology of complements of discriminants and m
 oduli spaces</a>\nby Orsola Tommasi (University of Padova) as part of Rich
 mond Geometry Festival\n\n\nAbstract\nThe discriminant of a space of funct
 ions is the closed subset consisting of the functions which are singular i
 n some sense. In our case\, we will consider the space of non-singular sec
 tions of a very ample line bundle L on a fixed non-singular variety. In th
 is set-up\, Vakil and Wood proved a stabilization behaviour for the class 
 of complements of discriminants in the Grothendieck group of varieties.\n\
 nIn this talk\, I will discuss a topological approach for obtaining the co
 homological counterpart of Vakil and Wood's result\, which implies that th
 e k-th cohomology group of the space of non-singular sections remains the 
 same if one takes a sufficiently high power of the line bundle L. As an ap
 plication\, I will present a result by my PhD student Angelina Zheng on th
 e stabilization of the cohomology of the moduli space of trigonal curves.\
 n
LOCATION:https://stable.researchseminars.org/talk/RVAGeometryFestival/6/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Jennifer Hom (Georgia Tech)
DTSTART:20210611T173000Z
DTEND:20210611T183000Z
DTSTAMP:20260404T094912Z
UID:RVAGeometryFestival/7
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/RVAGe
 ometryFestival/7/">Unknotting number and satellites</a>\nby Jennifer Hom (
 Georgia Tech) as part of Richmond Geometry Festival\n\n\nAbstract\nThe unk
 notting number of a knot is the minimum number of crossing changes needed 
 to untie the knot. It is one of the simplest knot invariants to define\, y
 et remains notoriously difficult to compute. We will survey some basic kno
 t theory invariants and constructions\, including the satellite knot const
 ruction\, a straightforward way to build new families of knots. We will gi
 ve a lower bound on the unknotting number of certain satellites using knot
  Floer homology. This is joint work in progress with Tye Lidman and JungHw
 an Park.\n
LOCATION:https://stable.researchseminars.org/talk/RVAGeometryFestival/7/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dawei Chen (Boston College)
DTSTART:20210611T193000Z
DTEND:20210611T203000Z
DTSTAMP:20260404T094912Z
UID:RVAGeometryFestival/8
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/RVAGe
 ometryFestival/8/">Volumes and intersection theory on moduli spaces</a>\nb
 y Dawei Chen (Boston College) as part of Richmond Geometry Festival\n\n\nA
 bstract\nA differential defines a flat metric with conical singularities t
 hat can realize the underlying Riemann surface as a polygon. The edge coor
 dinates of such polygons induce a volume form on the moduli space of diffe
 rentials. In this talk I will explain how to compute this volume via inter
 section theory on the moduli space of Riemann surfaces.\n
LOCATION:https://stable.researchseminars.org/talk/RVAGeometryFestival/8/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Welcome message
DTSTART:20210610T124500Z
DTEND:20210610T130000Z
DTSTAMP:20260404T094912Z
UID:RVAGeometryFestival/9
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/RVAGe
 ometryFestival/9/">Welcome message</a>\nby Welcome message as part of Rich
 mond Geometry Festival\n\nAbstract: TBA\n
LOCATION:https://stable.researchseminars.org/talk/RVAGeometryFestival/9/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Informal discussion
DTSTART:20210610T141500Z
DTEND:20210610T150000Z
DTSTAMP:20260404T094912Z
UID:RVAGeometryFestival/10
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/RVAGe
 ometryFestival/10/">Informal discussion on gather.town</a>\nby Informal di
 scussion as part of Richmond Geometry Festival\n\nAbstract: TBA\n
LOCATION:https://stable.researchseminars.org/talk/RVAGeometryFestival/10/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Poster session
DTSTART:20210610T161500Z
DTEND:20210610T173000Z
DTSTAMP:20260404T094912Z
UID:RVAGeometryFestival/11
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/RVAGe
 ometryFestival/11/">Poster session</a>\nby Poster session as part of Richm
 ond Geometry Festival\n\nAbstract: TBA\n
LOCATION:https://stable.researchseminars.org/talk/RVAGeometryFestival/11/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Informal discussion
DTSTART:20210610T184500Z
DTEND:20210610T193000Z
DTSTAMP:20260404T094912Z
UID:RVAGeometryFestival/12
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/RVAGe
 ometryFestival/12/">Informal discussion on gather.town</a>\nby Informal di
 scussion as part of Richmond Geometry Festival\n\nAbstract: TBA\n
LOCATION:https://stable.researchseminars.org/talk/RVAGeometryFestival/12/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Informal discussion
DTSTART:20210611T141500Z
DTEND:20210611T150000Z
DTSTAMP:20260404T094912Z
UID:RVAGeometryFestival/13
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/RVAGe
 ometryFestival/13/">Informal discussion on gather.town</a>\nby Informal di
 scussion as part of Richmond Geometry Festival\n\nAbstract: TBA\n
LOCATION:https://stable.researchseminars.org/talk/RVAGeometryFestival/13/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Informal discussion
DTSTART:20210611T161500Z
DTEND:20210611T173000Z
DTSTAMP:20260404T094912Z
UID:RVAGeometryFestival/14
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/RVAGe
 ometryFestival/14/">Informal discussion on gather.town</a>\nby Informal di
 scussion as part of Richmond Geometry Festival\n\nAbstract: TBA\n
LOCATION:https://stable.researchseminars.org/talk/RVAGeometryFestival/14/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Informal discussion
DTSTART:20210611T184500Z
DTEND:20210611T193000Z
DTSTAMP:20260404T094912Z
UID:RVAGeometryFestival/15
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/RVAGe
 ometryFestival/15/">Informal discussion on gather.town</a>\nby Informal di
 scussion as part of Richmond Geometry Festival\n\nAbstract: TBA\n
LOCATION:https://stable.researchseminars.org/talk/RVAGeometryFestival/15/
END:VEVENT
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